Skip to main content

PDF Reader & Annotator

Use all Helperbird features on PDFs - text-to-speech, highlighting, annotations, dyslexia fonts, and more.

After PDF Reader was enabled
Before PDF Reader was enabled

Helperbird Works on PDFs Too

PDFs are everywhere - academic papers, work documents, ebooks, forms. But they're often hard to read. Small text, no customization options, no accessibility features.

Helperbird changes that. Open a PDF, and all of Helperbird's tools work on it - text-to-speech, dyslexia fonts, color overlays, highlighting, annotations, everything.

Learn how to use Helperbird with PDFs


What You Can Do

Read PDFs aloud: Select text and have it read to you with text-to-speech.

Add highlights: Mark important sections with different colors.

Leave sticky notes: Annotate PDFs with comments and reminders.

Draw on PDFs: Use pen, shapes, arrows, and lines to mark up documents visually.

Use Immersive Reader: Open PDF text in a clean, customizable reading view.

Apply dyslexia fonts: Change the font to OpenDyslexic or Lexend.

Add color overlays: Reduce eye strain with tinted overlays.

All the features that work on websites work on PDFs.


Why This Matters

Most PDF readers give you very few options. You read what you're given. Helperbird lets you customize the experience - make text bigger, hear it read aloud, add notes, change colors.

For people with dyslexia or visual difficulties, this can make the difference between a PDF being usable or not.


Who Uses This

Students studying from academic PDFs and textbooks.

Researchers annotating papers and highlighting key findings.

Professionals reviewing contracts, reports, and documents.

Anyone with dyslexia who needs accessible PDF reading tools.


Is This Free?

Basic PDF features like highlighting are free. Advanced features like text-to-speech require Helperbird Pro.

More accessibility features

This extension has been an absolute lifesaver. I have that fantastic combo of ADHD and Dyslexia while trying to go through college. I have difficulty keeping letters in order, seeing the gaps between words, and with ADHD on top, I lose focus A LOT. The immersive reader has been my new best friend. It drowns out the rest of the content on the page, changes the font to something I can read, and highlights the word as it reads to me. My eyes are forced to keep going in the right direction. I can slow down and pay attention to what I'm reading. I don't even have to go back and read the same paragraph 5 times to understand it! The screen overlay has been outstanding for eye strain and being able to distinguish between words and spaces. The custom font and spacing for research articles have been an enormous advantage! I can actually read the research papers now and not have this daunting 2 column fine print page to squint over.All around, this has been the best purchase I've ever had. I use this every day, with every assignment. I don't even struggle with story-based questions anymore. The immersive reader helps me read, listen, and understand the question all at once. I am still exploring what I can use this with and how it can make my academic career, and I keep getting impressed with every new way I find to use it. Seriously, try it out. You won't regret it at all. Even if you don't have dyslexia or ADHD, just try it out. You might find that it helps you understand the content you're trying to learn even better!

Mason Hunter
Mason Hunter
Helperbird user
Helperbird logo: Stylized owl with large yellow eyes and a beige face, against a green background.

Download Helperbird

Make browsing easier and more accessible with tools like Text to Speech, Immersive Reader, and more.